Sterol requirement of mating strains of heterothallic phytophthoras

Elliott, C.G.; Glen, B.

Journal of General Microbiology 128(4): 859-864


ISSN/ISBN: 0022-1287
DOI: 10.1099/00221287-128-4-859
Accession: 006479957

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The induction by A2 strains of Phytophthora parasitica and P. palmivora of sexual reproduction in an A1 strain of P. parasitica was studied using synthetic medium with and without sterol, the strains being separated by a polycarbonate membrane. Production of the inducing .alpha.2 hormone by the A2 strain does not appear to require sterol, but sterol greatly enhances the response to the inducing hormone by the A1 strain and is required for subsequent oospore development.